Keyboard



FIG. 1 is a reduced top front and right perspective view of a keyboard showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a front perspective view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a rear perspective view thereof. 

The ornamental design for a keyboard, as shown and described. 